Java example source code file (UnusedCustomizationChecker.java)

This example Java source code file (UnusedCustomizationChecker.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

bideclaration, hashset, iterator, map, set, simpletypebuilder, util, xsattcontainer, xscomponent, xsidentityconstraint, xsparticle, xsschema, xssimpletypevisitor, xsvisitor, xsxpath

The UnusedCustomizationChecker.java Java example source code

/*
 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.internal.xjc.reader.xmlschema;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import com.sun.tools.internal.xjc.reader.Const;
import com.sun.tools.internal.xjc.reader.Ring;
import com.sun.tools.internal.xjc.reader.xmlschema.bindinfo.BIDeclaration;
import com.sun.xml.internal.bind.v2.WellKnownNamespace;
import com.sun.xml.internal.xsom.XSAnnotation;
import com.sun.xml.internal.xsom.XSAttContainer;
import com.sun.xml.internal.xsom.XSAttGroupDecl;
import com.sun.xml.internal.xsom.XSAttributeDecl;
import com.sun.xml.internal.xsom.XSAttributeUse;
import com.sun.xml.internal.xsom.XSComplexType;
import com.sun.xml.internal.xsom.XSComponent;
import com.sun.xml.internal.xsom.XSContentType;
import com.sun.xml.internal.xsom.XSElementDecl;
import com.sun.xml.internal.xsom.XSFacet;
import com.sun.xml.internal.xsom.XSIdentityConstraint;
import com.sun.xml.internal.xsom.XSListSimpleType;
import com.sun.xml.internal.xsom.XSModelGroup;
import com.sun.xml.internal.xsom.XSModelGroupDecl;
import com.sun.xml.internal.xsom.XSNotation;
import com.sun.xml.internal.xsom.XSParticle;
import com.sun.xml.internal.xsom.XSRestrictionSimpleType;
import com.sun.xml.internal.xsom.XSSchema;
import com.sun.xml.internal.xsom.XSSchemaSet;
import com.sun.xml.internal.xsom.XSSimpleType;
import com.sun.xml.internal.xsom.XSUnionSimpleType;
import com.sun.xml.internal.xsom.XSWildcard;
import com.sun.xml.internal.xsom.XSXPath;
import com.sun.xml.internal.xsom.visitor.XSSimpleTypeVisitor;
import com.sun.xml.internal.xsom.visitor.XSVisitor;

/**
 * Reports all unacknowledged customizations as errors.
 *
 * <p>
 * Since we scan the whole content tree, we use this to check for unused
 * <tt>xmime:expectedContentTypes attributes. TODO: if we find this kind of error checks more
 * common, use the visitors so that we don't have to mix everything in one class.
 *
 * @author
 *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
 */
class UnusedCustomizationChecker extends BindingComponent implements XSVisitor, XSSimpleTypeVisitor {
    private final BGMBuilder builder = Ring.get(BGMBuilder.class);
    private final SimpleTypeBuilder stb = Ring.get(SimpleTypeBuilder.class);

    private final Set<XSComponent> visitedComponents = new HashSet();

    /**
     * Runs the check.
     */
    void run() {
        for( XSSchema s : Ring.get(XSSchemaSet.class).getSchemas() ) {
            schema(s);
            run( s.getAttGroupDecls() );
            run( s.getAttributeDecls() );
            run( s.getComplexTypes() );
            run( s.getElementDecls() );
            run( s.getModelGroupDecls() );
            run( s.getNotations() );
            run( s.getSimpleTypes() );
        }
    }

    private void run( Map<String,? extends XSComponent> col ) {
        for( XSComponent c : col.values() )
            c.visit(this);
    }


    /**
     * Checks unused customizations on this component
     * and returns true if this is the first time this
     * component is checked.
     */
    private boolean check( XSComponent c ) {
        if( !visitedComponents.add(c) )
            return false;   // already processed

        for( BIDeclaration decl : builder.getBindInfo(c).getDecls() )
            check(decl, c);

        checkExpectedContentTypes(c);

        return true;
    }

    private void checkExpectedContentTypes(XSComponent c) {
        if(c.getForeignAttribute(WellKnownNamespace.XML_MIME_URI, Const.EXPECTED_CONTENT_TYPES)==null)
            return; // no such attribute
        if(c instanceof XSParticle)
            return; // particles get the same foreign attributes as local element decls,
                    // so we need to skip them

        if(!stb.isAcknowledgedXmimeContentTypes(c)) {
            // this is not used
            getErrorReporter().warning(c.getLocator(),Messages.WARN_UNUSED_EXPECTED_CONTENT_TYPES);
        }
    }

    private void check(BIDeclaration decl, XSComponent c) {
        if( !decl.isAcknowledged() ) {
            getErrorReporter().error(
                decl.getLocation(),
                Messages.ERR_UNACKNOWLEDGED_CUSTOMIZATION,
                decl.getName().getLocalPart()
                );
            getErrorReporter().error(
                c.getLocator(),
                Messages.ERR_UNACKNOWLEDGED_CUSTOMIZATION_LOCATION);
            // mark it as acknowledged to avoid
            // duplicated error messages.
            decl.markAsAcknowledged();
        }
        for (BIDeclaration d : decl.getChildren())
            check(d,c);
    }


    public void annotation(XSAnnotation ann) {}

    public void attGroupDecl(XSAttGroupDecl decl) {
        if(check(decl))
            attContainer(decl);
    }

    public void attributeDecl(XSAttributeDecl decl) {
        if(check(decl))
            decl.getType().visit((XSSimpleTypeVisitor)this);
    }

    public void attributeUse(XSAttributeUse use) {
        if(check(use))
            use.getDecl().visit(this);
    }

    public void complexType(XSComplexType type) {
        if(check(type)) {
            // don't need to check the base type -- it must be global, thus
            // it is covered already
            type.getContentType().visit(this);
            attContainer(type);
        }
    }

    private void attContainer( XSAttContainer cont ) {
        for( Iterator itr = cont.iterateAttGroups(); itr.hasNext(); )
            ((XSAttGroupDecl)itr.next()).visit(this);

        for( Iterator itr = cont.iterateDeclaredAttributeUses(); itr.hasNext(); )
            ((XSAttributeUse)itr.next()).visit(this);

        XSWildcard wc = cont.getAttributeWildcard();
        if(wc!=null)        wc.visit(this);
    }

    public void schema(XSSchema schema) {
        check(schema);
    }

    public void facet(XSFacet facet) {
        check(facet);
    }

    public void notation(XSNotation notation) {
        check(notation);
    }

    public void wildcard(XSWildcard wc) {
        check(wc);
    }

    public void modelGroupDecl(XSModelGroupDecl decl) {
        if(check(decl))
            decl.getModelGroup().visit(this);
    }

    public void modelGroup(XSModelGroup group) {
        if(check(group)) {
            for( int i=0; i<group.getSize(); i++ )
                group.getChild(i).visit(this);
        }
    }

    public void elementDecl(XSElementDecl decl) {
        if(check(decl)) {
            decl.getType().visit(this);
            for( XSIdentityConstraint id : decl.getIdentityConstraints() )
                id.visit(this);
        }
    }

    public void simpleType(XSSimpleType simpleType) {
        if(check(simpleType))
            simpleType.visit( (XSSimpleTypeVisitor)this );
    }

    public void particle(XSParticle particle) {
        if(check(particle))
            particle.getTerm().visit(this);
    }

    public void empty(XSContentType empty) {
        check(empty);
    }

    public void listSimpleType(XSListSimpleType type) {
        if(check(type))
            type.getItemType().visit((XSSimpleTypeVisitor)this);
    }

    public void restrictionSimpleType(XSRestrictionSimpleType type) {
        if(check(type))
            type.getBaseType().visit(this);
    }

    public void unionSimpleType(XSUnionSimpleType type) {
        if(check(type)) {
            for( int i=0; i<type.getMemberSize(); i++ )
                type.getMember(i).visit((XSSimpleTypeVisitor)this);
        }
    }

    public void identityConstraint(XSIdentityConstraint id) {
        if(check(id)) {
            id.getSelector().visit(this);
            for( XSXPath xp : id.getFields() )
                xp.visit(this);
        }
    }

    public void xpath(XSXPath xp) {
        check(xp);
    }

}